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  • Title: Once-daily darunavir/ritonavir vs. lopinavir/ritonavir in treatment-naive, HIV-1-infected patients: 96-week analysis.
    Author: Mills AM, Nelson M, Jayaweera D, Ruxrungtham K, Cassetti I, Girard PM, Workman C, Dierynck I, Sekar V, Abeele CV, Lavreys L.
    Journal: AIDS; 2009 Aug 24; 23(13):1679-88. PubMed ID: 19487905.
    Abstract:
    OBJECTIVE: Present 96-week data from ongoing ARTEMIS (AntiRetroviral Therapy with TMC114 ExaMined In Naive Subjects) trial. METHODS: Randomized, open-label, phase III trial of antiretroviral-naive patients with HIV-1 RNA at least 5000 copies/ml (stratified by HIV-1 RNA and CD4 cell count) receiving darunavir/ritonavir (DRV/r) 800/100 mg once daily or lopinavir/ritonavir (LPV/r) 800/200 mg total daily dose (twice daily or once daily) and fixed-dose tenofovir/emtricitabine. Primary outcome measure was noninferiority of DRV/r vs. LPV/r in virologic response (<50 copies/ml, time-to-loss of virologic response) at 96 weeks (secondary outcome: superiority). RESULTS: Six hundred eighty-nine patients were enrolled. At week 96, significantly more DRV/r (79%) than LPV/r patients (71%) had viral load less than 50 copies/ml, confirming statistical noninferiority (estimated difference: 8.4%; 95% confidence interval 1.9-14.8; P < 0.001; per-protocol) and superiority (P = 0.012; intent-to-treat) in virologic response. Median CD4 cell count increases from baseline were 171 and 188 cells/microl for DRV/r and LPV/r, respectively (P = 0.57; noncompleter=failure). Overall, 4% of DRV/r patients and 9% of LPV/r patients discontinued treatment due to adverse events. Lower rates of grade 2-4 treatment-related diarrhea were seen with DRV/r (4%) vs. LPV/r (11%; P < 0.001), whereas grade 2-4 treatment-related rash occurred infrequently in both arms (3 vs. 1%, respectively; P = 0.273). DRV/r patients had smaller median increases in triglycerides (0.1 and 0.6 mmol/l, respectively, P < 0.0001) and total cholesterol (0.6 and 0.9 mmol/l, respectively; P < 0.0001) than LPV/r patients; levels remained below National Cholesterol Education Program cut-offs for DRV/r. CONCLUSION: At week 96, once-daily DRV/r was both statistically noninferior and superior in virologic response to LPV/r, with a more favorable gastrointestinal and lipid profile, confirming DRV/r as an effective, well tolerated, and durable option for antiretroviral-naive patients.
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